Climate and monthly weather forecastWashington, CA
Climate and monthly weather forecast
Weather in January
January, the same as December, in Washington, California, is another chilly winter month, with an average temperature varying between 30.9°F (-0.6°C) and 45.7°F (7.6°C). The arrival of January brings an average high-temperature of a still frosty 45.7°F (7.6°C), nearly identical to December's 43.7°F (6.5°C). Weather in January »Weather in February
February, the last month of the winter in Washington, is another chilly month, with temperature in the range of an average low of 29.3°F (-1.5°C) and an average high of 45.5°F (7.5°C). February denotes a minimal variation in the average high-temperature to a still frosty 45.5°F (7.5°C) from January's 45.7°F (7.6°C). Weather in February »Weather in March
The first month of the spring, March, is also a frosty month in Washington, California, with an average temperature fluctuating between 31.5°F (-0.3°C) and 47.8°F (8.8°C). March's advent denotes a minor fluctuation in the average high-temperature to a still chilly 47.8°F (8.8°C) from February's 45.5°F (7.5°C). Weather in March »Weather in April
April in Washington, California, is a cool spring month, with an average temperature varying between 55.2°F (12.9°C) and 35.4°F (1.9°C). April brings a slight rise in Washington's average high-temperature, moving from a chilly 47.8°F (8.8°C) in March to a fresh 55.2°F (12.9°C). Weather in April »Weather in May
The last month of the spring, May, is a comfortable month in Washington, California, with temperature in the range of an average low of 40.6°F (4.8°C) and an average high of 63.1°F (17.3°C). Washington's May weather indicates a minor increase in high-temperatures, edging from April's cool 55.2°F (12.9°C) to a comfortable 63.1°F (17.3°C). Weather in May »Weather in June
June, the first month of the summer in Washington, is a moderately hot month, with an average temperature ranging between min 48°F (8.9°C) and max 74.8°F (23.8°C). An escalation in the average high-temperature is seen with the onset of June, moving from a refreshing 63.1°F (17.3°C) in May to a warm 74.8°F (23.8°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Washington, California, with temperature in the range of an average high of 83.5°F (28.6°C) and an average low of 52.9°F (11.6°C). July is the month when Washington experiences its warmest temperatures, averaging a high of 83.5°F (28.6°C) and a low of 52.9°F (11.6°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Washington, California, with an average temperature varying between 52°F (11.1°C) and 82.4°F (28°C). During August, the average high-temperature is a still moderately hot 82.4°F (28°C), maintaining a close resemblance to that of the preceding month. Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Washington, California, with an average temperature fluctuating between 76.6°F (24.8°C) and 48°F (8.9°C). September is characterized by a mild reduction in the average high-temperature, from a warm 82.4°F (28°C) in August to a still moderately hot 76.6°F (24.8°C). Weather in September »Weather in October
October, the same as September, is another comfortable autumn month in Washington, California, with an average temperature fluctuating between 42.1°F (5.6°C) and 64.2°F (17.9°C). October weather is marked by a drop in the average high-temperature, falling from a moderately hot 76.6°F (24.8°C) in September to an enjoyable 64.2°F (17.9°C). Weather in October »Weather in November
The last month of the autumn, November, is another cool month in Washington, California, with temperature in the range of an average low of 35.1°F (1.7°C) and an average high of 52.3°F (11.3°C). The arrival of November corresponds with a reduction in the average high-temperature, down from October's refreshing 64.2°F (17.9°C) to a fresh 52.3°F (11.3°C). Weather in November »Weather in December
December, the first month of the winter in Washington, is still a chilly month, with an average temperature varying between 43.7°F (6.5°C) and 29.1°F (-1.6°C). Washington's temperature records reveal December as the coldest month, marked by average highs of 43.7°F (6.5°C) and lows of 29.1°F (-1.6°C). Weather in December »Updated: Feb 9, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Washington, California, during the entire year, the rain falls for 72.9 days and collects up to 36.06" (916mm) of precipitation.
Months with snowfall in Washington, California, are January through June, September through December.
Throughout the year, in Washington, there are 53.3 snowfall days, and 151.57" (3850mm) of snow is accumulated.
January has the least sunshine of the year in Washington, with an average of 5.6h of sunshine.
The months with the lowest UV index in Washington, California, are January through March, November and December, with an average maximum UV index of 2.
With an average relative humidity of 80%, March is the most humid month in Washington.
March is the month with the most rainfall in Washington, California. Rain falls for 10.8 days and accumulates 7.09" (180mm) of precipitation.
The month with the most snowfall is March, when snow falls for 11.7 days and typically aggregates up to 37.6" (955mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Washington, California, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
The month with the longest days in Washington, California, is June, with an average of 14h and 54min of daylight.
June and July, with an average maximum UV index of 6, are months with the highest UV index.
July proves to be the warmest month, recording an average peak temperature of 83.5°F (28.6°C) and a minimum temperature of 52.9°F (11.6°C).
The least humid month is July, with an average relative humidity of 39%.
The month with the least rainfall is July, when the rain falls for 1.8 days and typically collects 0.08" (2mm) of precipitation.
In Washington, snow does not fall in July and August.
With an average of 12.1h of sunshine, July has the most sunshine of the year in Washington.
December is the coldest month in Washington, California, exhibiting average temperatures of 43.7°F (6.5°C) at the peak and 29.1°F (-1.6°C) at the base.
With an average of 9h and 24min of daylight, December has the shortest days of the year.
Average temperature
Washington, CA
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is December (43.7°F).
The month with the highest average low temperature is July (52.9°F).
The coldest month (with the lowest average low temperature) is December (29.1°F).
Average pressure
Washington, CA
- Average pressure in January:
30.17"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
30.01"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.9"Hg
- Average pressure in July:
29.92"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.93"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed
Washington, CA
- Average wind speed in January:
6mph - Average wind speed in February:
6.3mph - Average wind speed in March:
6.1mph - Average wind speed in April:
5.8mph - Average wind speed in May:
5.5mph - Average wind speed in June:
5.6mph
- Average wind speed in July:
5.2mph - Average wind speed in August:
5.1mph - Average wind speed in September:
5.2mph - Average wind speed in October:
5.7mph - Average wind speed in November:
5.5mph - Average wind speed in December:
5.8mph
The windiest month (with the highest average wind speed) is February (6.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity
Washington, CA
The month with the highest relative humidity is March (80%).
The month with the lowest relative humidity is July (39%).
Average rainfall
Washington, CA
- Average rainfall in January:
5.67" - Average rainfall in February:
6.57" - Average rainfall in March:
7.09" - Average rainfall in April:
2.8" - Average rainfall in May:
2.48" - Average rainfall in June:
0.51"
- Average rainfall in July:
0.08" - Average rainfall in August:
0.12" - Average rainfall in September:
0.47" - Average rainfall in October:
1.34" - Average rainfall in November:
3.39" - Average rainfall in December:
5.55"
The wettest month (with the highest rainfall) is March (7.09").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days
Washington, CA
- Average rainfall days in January:
6.3 days - Average rainfall days in February:
5.3 days - Average rainfall days in March:
10.8 days - Average rainfall days in April:
11 days - Average rainfall days in May:
10.1 days - Average rainfall days in June:
3.8 days
- Average rainfall days in July:
1.8 days - Average rainfall days in August:
2.1 days - Average rainfall days in September:
3.8 days - Average rainfall days in October:
4.5 days - Average rainfall days in November:
5.9 days - Average rainfall days in December:
7.5 days
The month with the highest number of rainy days is April (11 days).
The month with the least rainy days is July (1.8 days).
Average snowfall
Washington, CA
- Average snowfall in January:
29.37" - Average snowfall in February:
32.48" - Average snowfall in March:
37.6" - Average snowfall in April:
11.61" - Average snowfall in May:
6.65" - Average snowfall in June:
0.2"
The month with the highest snowfall is March (37.6").
The months with the least snowfall are July and August (0").
Average snowfall days
Washington, CA
- Average snowfall days in January:
8.7 days - Average snowfall days in February:
9.3 days - Average snowfall days in March:
11.7 days - Average snowfall days in April:
6.3 days - Average snowfall days in May:
2.2 days - Average snowfall days in June:
0.4 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0.2 days - Average snowfall days in October:
0.9 days - Average snowfall days in November:
4.6 days - Average snowfall days in December:
9 days
The month with the highest number of snowfall days is March (11.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight / Average sunshine
Washington, CA
- Average daylight in January:
9h and 48min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
14h and 54min
- Average daylight in July:
14h and 36min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
5h and 36min - Average sunshine in February:
5h and 48min - Average sunshine in March:
6h and 54min - Average sunshine in April:
9h and 36min - Average sunshine in May:
10h and 36min - Average sunshine in June:
11h and 42min
- Average sunshine in July:
12h and 6min - Average sunshine in August:
11h and 54min - Average sunshine in September:
11h and 12min - Average sunshine in October:
7h and 6min - Average sunshine in November:
6h and 24min - Average sunshine in December:
5h and 42min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).
Average sunshine days
Washington, CA
- Average sunshine days in January:
18.7 days - Average sunshine days in February:
16 days - Average sunshine days in March:
12.6 days - Average sunshine days in April:
14 days - Average sunshine days in May:
18.3 days - Average sunshine days in June:
24.9 days
- Average sunshine days in July:
28 days - Average sunshine days in August:
27.1 days - Average sunshine days in September:
25.7 days - Average sunshine days in October:
25.4 days - Average sunshine days in November:
20.1 days - Average sunshine days in December:
17.6 days
The month with the most sunshine days is July (28 days).
The month with the least sunshine days is March (12.6 days).
Average UV index
Washington, CA
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Washington, CA
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 5).
Average visibility
Washington, CA
The months with the highest visibility are May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March and April (5mi).
